Number of n X 4 0..3 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor.

A203097

Number of n X 4 0..3 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor.

Terms

    a(0) =50a(1) =12260a(2) =2029744a(3) =308642476a(4) =48260497186

External references